US 12,276,305 B2Granted

Bearing seal and its applications

AssigneeAktiebolaget Skf

InventorsMeng Zhang, Dapeng Li, Yangguang Zhao, He Zhu

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Abstract

A bearing seal for a rolling bearing with standard boundary dimensions that comprises a first flinger fitted into a first bearing ring and a second flinger fitted into a second bearing ring. Each flinger further comprises a correspondingly numbered sealing body. A first sealing body engages the second flinger and/or the second bearing ring, and a second sealing body engages the first flinger and/or the first bearing ring. The axial width of the bearing seal varies along the radial direction of the bearing. Starting at the first bearing ring, with a narrow width W, defined relative to the total radial size of the bearing seal L, wherein the ratio W/L is less than or equal to 0.5, the bearing seal widens toward the second bearing ring, thereby providing extra space between the rolling elements and/or cage and the bearing seal adjacent to the first bearing ring.

Claims8

Dependent claims

A bearing seal comprising:

a first flinger configured to be secured to a first shoulder of a first bearing ring on an axial side of a bearing, the first flinger comprising a first axial portion and a first radial portion, and
a second flinger configured to be secured to a second shoulder of a second bearing ring on the axial side of the bearing, the second flinger comprising a second axial portion and a second radial portion, and
a first sealing body formed on the first flinger comprising a first plurality of lips, one lip of the first plurality of lips forming a contact seal with the second flinger,
a second sealing body formed on the second flinger comprising a second plurality of lips, one lip of the second plurality of lips forming a contact seal with the first flinger and another lip of the second plurality of lips forming a non-contact seal with the first flinger,
wherein the first radial portion comprising a first segment and a second segment, the first segment being axially closer to the second radial portion than the second segment, and
wherein the first segment of the first radial portion is located within an axial distance W of the second radial portion, and
wherein a total radial size L of the bearing seal is measured between the first axial portion of the first flinger and the second axial portion of the second flinger.

4 more elements

Dependencies are inferred from the claim text.